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Later Kibitzing> |
Apr-27-16
 | | al wazir: I was skunked too. I considered moving the ♘, but not to e4. My only other idea was 34. Qg5, threatening the ♖ on d8, but black has a bunch of replies. Pretty lame. |
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| Apr-27-16 | | patzer2: Took a few minutes mulling over this Wednesday puzzle, but after I considered 34. Ne4! then 34...fxe4 35. Qxe4+ Kh8 36. Rg5  with a double attack threatening mate or the Queen fell into place.The clear losing move was 33...b4?, more or less forcing 34. Ne4 (+10.51 @ 24 depth, Deep Fritz 13). Instead, 33...Rdf8 34. Nd1 Qf5 35. Ne3  (+1.27 @ 17 depth, Deep Fritz 15) gives Black survival chances. Earlier, perhaps the computer suggestion 19...g5 20. h4 f6 = (0.00 @ 20 depth, Deep Fritz 15) would have kept it level for Black. |
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| Apr-27-16 | | agb2002: White has a knight for a bishop.
Black threatens 34... bxc3.
White can take advantage of the risky position of the black king and the pinned bishop with 34.Ne4, threatening 35.Ng5+: A) 34... fxe4 35.Qxe4+ Kh8 (35... Rf5 36.Rxf5 is crushing, for example 36... Rd4 37.Rf7+ Kh8 38.Q(R)h7#) A.1) 36.Rg6 Qd5 37.Rxh6+ Rh7 38.Rxh7+ Kxh7 39.Rxc6+ Qxe4+ (else 40.Qxd5 Rxd5 41.Rxa6 + - [3P]) 40.dxe4 + - [2P]. A.2) 36.Qh4 Rd6 (36... Qd5+ 37.Rg2 followed by Rxh6 wins) 37.Qg5 A.2.a) 37... Rg7 38.Qxg7#.
A.2.b) 37... Ra(b,c,d,e)7 38.Rxh6+ Qxh6 39.Qg8#.
A.2.c) 37... Rd8 38.Rxh6+ Qxh6 39.Qxh6+ Rh7 40.Qf6+ Rg7 41.Qxg7#. A.2.d) 37... Rh7 38.Rxh6 Qd5+ (38... Rxh6 39.Qg7#; 38... Qxh6 39.Qg8#; 38... Qf7 39.Rxd6 + - [R+P]) 39.Rg2 Qxg2+ 40.Kxg2 Rdxh6 41.Qxe5+ with a complex ending. For example, 41... Kg8 42.Qb8+ Kf7 43.Qxb4 Rxh2+ 44.Kg1 Rxc2 45.Qb7+ Kg8 46.Qxa6 and now 46... Rhh2 fails to 47.Qb8+ and 48.Qxh2. B) 34... Rg7 35.Ng5+ Rxg5 (35... Kh8 36.Nxe6 Rxe6 37.Rxh6+ Kg8 38.Rxg2+ Kf7 39.Rg7+ Ke8 40.Rh8#) 36.Qxg5 Qd5+ (36... Rg8 37.Rxh6+ Qxh6 38.Qxg8#) 37.Rg2 wins. C) 34... Qd5(e7) 35.Rxh6+ Kxh6 36.Qg6#.
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36.Rg6 looks simpler. |
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| Apr-27-16 | | Dr. J: I agree with the commenters above that 34.Ne4 fxe4 35.Qxe4+ Kh8 36.Rg6 is sufficient to be considered a solution to the puzzle, since White wins at least 2 Pawns and maintains the attack. But why did <patzer2>'s Fritz give an evaluation of +10.51, and why did Black resign? I finally figured it out: 36...Qd5 37.Rgxh6+! Kg7 (37...Kg8 38.Rh8+ Kg7 39.Rxd8 Qxd8 40.Qg4+ wins the Queen in 2 more moves) 38.Rh7+ Kf8 (38...Kg8 39.Rh8+ as above, or 38...Kf6 39.Rf5+ wins a Rook) 39.Rh8+ Kg7 (39...Ke7 40.Rxe5+) 40.Rxd8 again wins Rook or Queen as above. (40...Rf1+ 41.Kg2 doesn't help.) |
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| Apr-27-16 | | AlicesKnight: 34.Ne4 (threst Ng5 with triple fork); ... a Q move loses the exchange at least, so ... fxe4; 35.Qxe4+; a black Q interpose loses Q for R at least, so ...Kh8; 36.Rg6 ought to be good for something..... yes! |
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| Apr-27-16 | | morfishine: White is up a piece and there's no better place to return the material than at <e4> |
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| Apr-27-16 | | leRevenant: I consider myself a weaker player than both <Penguincw> and <diagonalley> and yet have made it to 3/3 so far this week. !!! |
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| Apr-27-16 | | gofer: Well the first move is "obvious". Nc3 is attacked and needs to move, if there is nothing better. On the face of it there is nothing better, so move it must! <34 Ne4 ...>
The knight is immune.
34 ... fxe4
35 Qxe4+ Kh8 (Rf5 37 Rxf5 )
36 Rg6
But now white threatens Ng5+, so what should black do? Rd8, Rf7 and Bh6 cannot help. The queen is pretty useless too! 34 ... Qe7?
35 Rxh6+ Kxh6
36 Qg6#
34 ... Qf6?
35 Ng5+ Kh8 (Kg6/Kg7/Kg8 Ne4+ )
36 Rxh6+
<34 ... Kh8>
<35 Ng5 ...>
click for larger view35 ... Kg7/Kg8
36 Nxe6
35 ... Rg8/Qg6
36 Nxf7+ mating
35 ... Rg7
36 Nxe6 Rxg2
37 Rxh6+ Kg8
38 Rxg2+ Kf7
39 Rg7+ Ke8
40 Rh8#
Hmmm, so whether black takes the knight or not, he is doomed! ~~~
Yeh! But I didn't see <36 ... Qd5> for black, which is a pity. |
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| Apr-27-16 | | saturn2: Material is even but white attacks with the sacrifice Ne4 which black has to accept. |
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| Apr-27-16 | | Jambow: Well I made that one harder than it needed to be. Obvious move knight is under threat blacks pieces are pinned lines needed to be open and diagonals employed. Whew once I saw it, then it was flowing but why the initial move was so difficult for me I don't know. Looks rather obvious in hindsight. |
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Apr-27-16
 | | Willber G: <morfishine: White is up a piece and there's no better place to return the material than at <e4>> Material is equal apart from N for B. |
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| Apr-27-16 | | morfishine: <Willber G> Yes of course, for some reason I wasn't counting the pinned Bishop :) |
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| Apr-27-16 | | mel gibson: I found this one quite easy.
Black made an awful move to attack that Knight. |
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| Apr-27-16 | | stacase: Black's last move (33...b4) comes under the category of "Never wake a sleeping dog." Or maybe more appropriate, "Never waste a move by attacking a piece that's going to move anyway." When I decided on 34.Ne4 I hadn't noticed that Black had invited the Knight to move. |
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| Apr-27-16 | | mel gibson: <Black's last move (33...b4) comes under the category of "Never wake a sleeping dog." Or maybe more appropriate, "Never waste a move by attacking a piece that's going to move anyway." When I decided on 34.Ne4 I hadn't noticed that Black had invited the Knight to move.> Well said.
I just checked on my computer.
33...b4 should not have been played by black -
it was a blunder.
It gives
34 Ne4
score for white +8.55 depth 18.
the best move for black was 33...Q-f6.
Score for black -1.34 depth 21 |
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| Apr-27-16 | | alfiere nero: Darn it. Although I predicted the moves correctly, I didn't see 36 ... Qd5 either. So I don't consider it "solved". |
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| Apr-27-16 | | CHESSTTCAMPS: In this middle-game attacking position, white has a knight for a bishop, but all of black's pieces are tied down by white's powerfully deployed major pieces. Bh6 is pinned, Rd8 prevents Qg8#, Rf7 prevents Qg7#, and the BQ prevents Qg6#. Black threatens bxc3 and white must find the right move, because 34.Ne2?? allows 34... Qd5! forcing a queen trade and solving most of black's problems. 34.Ne4! does the trick, with the deadly threat of 35.Ng5+: A.34... fxe4 35.Qxe4+ Kh8 36.Rg6 Qd5 37.R6xh6+ Kg7 38.Rh7+ Kg8 (Kf6 39.Rf5+ wins a rook) 39.Rh8+ Kg7 40.Rxd8 Qxd8 41.Qxe5+ Rf6 42.Rf5 forces a won K&P ending. A.1 38... Kf8 39.Rh8+ Ke7 (Kg7 40.Rxd8 transposes to main line) 40.Rxe5+ wins the Q. B.34... Rg7 35.Qxg7#
C.34... Kh8 35.Ng5 Q moves 36.Nxf7+ Qxf7 37.Rxh6+ wins D.34... Qf6/d6 35.NxQ wins.
E.34... Q other 35.Qg6+ forces mate-in-3
F.34... Rg8 35.Qxg8#
G.34... other 35.Ng5+ wins.
Time for review.... |
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| Apr-27-16 | | CHESSTTCAMPS: In A, I missed the win of the Q pointed out by <Dr. J> |
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| Apr-27-16 | | 1.e4effort: Here's my problem - I looked at 34.Ne4 and rejected it immediately. Old age I guess |
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Apr-27-16
 | | Phony Benoni: <Dr. J> Aha! Being two pawns ahead is nice, but after <36...Qd5> there just had to be a crusher in the position. <37.Rgxh6+> is anti-intuitive, but does the job. |
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| Apr-27-16 | | kevin86: I missed this one as I looked at the immediate sac at h6. |
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| Apr-27-16 | | YouRang: The coolest thing about this puzzle IMO is that black really can't decline the knight-sac. The N threatens the K+Q fork, and black-to-move is helpless to avoid it without getting mated. Of course, black gets mated eventually in any case. |
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Apr-27-16
 | | paulalbert: Got this one, but after a long look and think. |
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| Apr-27-16 | | leRevenant: Thank you for the crusher <Phony Benoni> |
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Apr-27-16
 | | steinitzfan: I think the hardest part of this puzzle is seeing that the initial knight sacrifice cannot be declined. Any effort to wiggle out of that knight fork leaves something undefended. |
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Kibitzing
sac: 34.Ne4
